Paramith, Tika, Johnner P Sitompul, and Hyung Woo Lee. “The Effect of Organobentonites from Spent Bleaching Earth (SBE) and Commercial Bentonite on Nanocomposite Properties”. International Journal of Engineering & Technology 7, no. 4 (September 5, 2018): 2000–2005. Accessed May 1, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/15317.